package main

import "fmt"

func main() {
	var a int = 21
	var b = 10
	var c int

	c = a + b

	fmt.Println(a, b, c)

	fmt.Printf("a + b = %d\n", c)
	c = a - b
	fmt.Printf("a - b = %d\n", c)

	a++
	fmt.Println(" a++ = ", a)

	b--
	fmt.Println("b-- =", b)

	var t bool = true
	var r bool = false
	fmt.Println(t, r)

	fmt.Println(t && r)

	var A uint = 60 // 0011 1100
	var B uint = 13 // 0000 1101
	// 00001010
	fmt.Println(A & B)
	// 0011 1101
	fmt.Println(A | B)

}
